john r



{No Model.) I

J. R. RANDOLPH. SHUTTLE FOR SEWING MACHINES.

Patented June 23, 1896.

j%% j!) fPINVENTOR f' M i, BY m ATTORNEYS WITNESSES age/1 AND!!! BGRAHAHPHOTO LmiD WASNWGTORKDC UNITED STATES PATENT OFFICE.

JOHN R. RANDOLPH, OE NESVARK, NEW JERSEY, ASSIGNOR- OF ONE-HALE I TOJOHN J. MAGOVERN, OF SAME PLACE.

SHUTTLE FOR SEWING-MACHINES.

SPECIFICATION forming part of Letters Patent No. 562,774, dated June 23,1896.

Application filed November 21, 1895. Serial No. 569,649. (No model.)

i To all whom, it may concern:

Be it known that I, JOHN R. RANDOLPH, a citizen of the United States,residing in N ewark, county of Essex, and State of New Jersey, haveinvented certain new and useful I1nprovements in Shuttles forSewing-Machines and Bobbins Therefor; and I do hereby declare thefollowing to be a full, clear, and exact description of'the invention,such as will enable others skilled in the art to which it appertains tomake and use the same, reference being had to the accompanying drawings,and to letters of reference marked thereon, which form a part of thisspecification.

The object of this invention is to provide a bobbin-holder for thereception of the bobbin, so that said bobbin-holder is bound to revolvewith the bobbin; and also to provide means for centering thebobbin-holder in the sewingmachine shuttle, to reduce the frictionbetween said holder and the shuttle, and to thus render the device moredurable.

The invention consists in the improved bobbin-holder, its centeringmeans, and in the combination and arrangement of the various parts,substantially as will be hereinafter more fully described, and finallyembodied in the clauses of the claim.

In the accompanying drawings, Figure 1 is a side view of a shuttleprovided with my improvements; Fig. 2, a sectional view on the line soa: of Fig. 1 Fig. 3, a detail view illustrating a modified form ofbobbin-holder-centering device, and Figs. t and 5 detail views of twoforms of bobbin-holders applicable for the object of my invention.

In said drawings, A represents a shuttle similar to that known as theSinger oscillating shuttle, and consisting of the two side sections 6and a, hinged in the usual manner and held together by the traversingspring 0. Between the sections a. and Z2 is arranged the bobbin-holder,consisting of the metallic disk d', of slightly smaller diameter thanthe opening or cavity in the shuttle, and of the pin or tube c,projecting centrally from said disk. The end of the pin or tube 6 restsagainst the circular plate h, arranged in the cavity of the shuttle, andsaid circular plate his prevented from rotation by any desired andwell-kn0wn moans. Between said disk (1 and circular plate h and on thepin or tube 6 is arranged the thread-bobbin f, consisting of a papertube g, upon which the thread is wound. In

either case the bobbin (or its carrying paper tube) is so arranged onpin 2 that it is prevented from rotation or revolving on said pin. Thisis accomplished by a tight fit of said bobbin on the pin, but preferablythe pin or tube is provided with longit udinally-arran ged 6o ribs orproject-ions 6 as in Fig. 4, or with substantially spiral ribs 2 as inFig. 5. Instead of the ribs or projections a corrugated or roughenedsurface on the pin or tube 6 can be used for obtaining substantially thesame resultviz., increasing the friction between the bobbin and itscarrying-pin. The disk (Z is also provided in its center with a socketor (lent e, adapted to receive the pin or projection 0, made integralwith or arranged on with a hole or socket c and the disk 01 with aprojection or pin c adapted to engage the said hole or socket.

From the foregoing it can be seen that by having the bobbin fittingtightly on the pin or tube 6 the said bobbin is bound to revolve So withthe said pin, and the thread is thus prevented froin spilling andwinding around the pin, which would cause the thread to become fast andto break. As the disk (I, carrying the said pin 6, is centered, thefriction between said disk and the shuttle is greatly reduced, and aneven stitching thus obtained.

1 do not intend to limit myself to the precise construction shown anddescribed, as various alterations can be made without changing 0 thescope of my invention; but

What I claimas new, and desire to secure by Letters Patent, is-

1. The combination with the sewing-machine shuttle having a circularcavity, and

with its clamping-spring, of a pin or projection on said spring, acircular disk loosely arranged in said shuttle and provided with acentral socket or dent adapted to receive said pin or projection, a pinprojecting from said disk for the reception of the bobbin and means onsaid pin for increasing the friction between the bobbin and the pin,substantially as and for the purposes described.

2. The combination with the sewing-maching shuttle having a circularcavity, of a revoluble disk included by said cavity, a stationary platealso included by said cavity, a central pin projecting from said diskfor the reception of the thread-bobbin and abutting against said plate,and a series of ribs or projections on said pin, substantially as andfor the purposes described.

3. The combination with the sewing-machine shuttle having a circularcavity, of a revoluble disk included by said cavity, a stationary platealso included by said cavity, a central pin projecting from said diskfor the reception of the thread-bobbin and abutting against said plate,a series of ribs or projections on said pin and means for centering saiddisk and pin substantially as described.

4:. The combination with a sewing-machine shuttle having aclamping-spring, of a circular plate included by said shuttle, abobbinholder arranged between the plate and the clamping-spring, adaptedto revolve within the shuttle and comprising a disk having a shank whichabuts against the plate, and is adapted to carrya bobbin, and means forsecuring a bobbin to the shank in such manner that it is prevented fromrevolving independent of said pin.

5. The combination with a sewing-machine shuttle having a circularcavity, and with its clamping-spring, of a revoluble disk and astationary circular plate included by said cavity, the diameter of theplate being greater than the diameter of the disk, means on one side ofthe disk for centering said disk against the clamping-spring, a pin onthe outer side thereof for the reception of the thread-bobbin and meanson the pin for increasing the friction between said pin and thethread-bobbin, substantially as and for the purposes described.

In testimony that I claim the foregoing I have hereunto set my hand this16th day of November, 1895.

JOHN R. RANDOLPH.

\Vitnesses:

ALFRED GARTNER, WM. D. BELL.

Correction in Letters Patent No. 562,774.

It is hereby certified that in Letters Patent No. 562,7 7 4, grantedJune 23, 1896, upon the application of John R. Randolph, of Newark, NewJersey, for an improvement in Shuttles for Sewing-Machines, an errorappears in the printed specification requiring correction as followsviz: In line 39, page 2, the Word outer should read other; and that thesaid Letters Patent should be read With this correction therein that thesame may conform to the record of the case in the Patent Ofiice Signed,countersigned, and sealed this 21st day of July, A. 1)., 1896.

[SEAL] JNO. M. REYNOLDS,

Assistant Secretary of the Interior. Gountersignedi S. T. FISHER,

Acting Commissioner of Patents.

